JPS62126829A - Rush-current preventing circuit - Google Patents
Rush-current preventing circuitInfo
- Publication number
- JPS62126829A JPS62126829A JP60264889A JP26488985A JPS62126829A JP S62126829 A JPS62126829 A JP S62126829A JP 60264889 A JP60264889 A JP 60264889A JP 26488985 A JP26488985 A JP 26488985A JP S62126829 A JPS62126829 A JP S62126829A
- Authority
- JP
- Japan
- Prior art keywords
- rush
- preventing circuit
- current preventing
- current
- pkg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、ＰＫＧの活線挿抜に係り、特に電源電圧の落
込み防止に好適な、突入電流防止回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to hot insertion and removal of PKGs, and particularly to an inrush current prevention circuit suitable for preventing drop in power supply voltage.
公知例としては、第１図に示した定電流ダイオードの代
わりに一点破線で示した抵抗を入れたものである。しか
しｒをどの値に選んでも、ＶＩ／ｒ又はＩ ＭＡＸ ｒ
がＶＩ／ＲＬよりも１．５〜２倍程度必要であり、六入
電流が大きい欠点がある。A known example is one in which a resistor shown by a dotted line is inserted in place of the constant current diode shown in FIG. However, no matter what value r is chosen, VI/r or I MAX r
is required to be about 1.5 to 2 times as large as VI/RL, and has the disadvantage of a large input current.
本発明の目的は、ＰＫＧの活線挿抜時における電源ＰＫ
Ｇの電圧の落込みを最小限にする事を提供することにあ
る。The purpose of the present invention is to
The purpose is to minimize the drop in the G voltage.
本発明は、ＰＫＧの電源入力ラインに定電流ダイオード
を入れ、挿入ＰＫＧの８敬負荷を定電流で充電する。こ
のようにする事により、挿入ＰＫＧへの突入電流を一定
電流以下に押える事ができる。According to the present invention, a constant current diode is inserted into the power supply input line of the PKG, and the eight loads of the inserted PKG are charged with a constant current. By doing this, the rush current to the insertion PKG can be suppressed to a constant current or less.
以下１本発明の一実施例を第１図〜第３図により説明す
る。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
本回路構成は、第１図に示すように″ＦＬ源ラインに定
電流ダイオード１を挿入し、そのダイオードと並列にス
イッチ２を入れた様になっている。又従来の回路を一点
破線で示す。し＝０でＰＫＧを挿入したと考えると、こ
の時間的電流変化は第３図のようになりし＝ｔ１（従来
の場合し＝シ２）で８１を○Ｎする事により、正規の電
圧がＰＫＧに供給される。As shown in Fig. 1, this circuit configuration is such that a constant current diode 1 is inserted into the FL source line and a switch 2 is turned on in parallel with the diode.Also, the conventional circuit is shown by a dashed line. If we consider that the PKG is inserted with shi = 0, this temporal current change will be as shown in Figure 3. By changing 81 at t1 (conventional case = shi 2), we can obtain the normal voltage. is supplied to the PKG.
本実施例によれば、従来の抵抗ｒを入れた場合より突入
電流Ｉ ＮＡＸを小さくできる効果がある。According to this embodiment, there is an effect that the inrush current INAX can be made smaller than when the conventional resistor r is inserted.
本発明によれば、パッケージの活線挿入時にｆｈＩ ！
ｔｉな回路で六入電流を小さく押える効果がある。According to the invention, fhI! during hot insertion of the package.
The ti circuit has the effect of keeping the input current small.
第１図は、本発明の一実施例の回路図、刀２図は、電圧
の時間的変化図、
第３図は、電流の時間的変化図である。
ｌ・・・定電流ダイオード、２・・・スイッチ、３・・
・ＰＫＧ容址性負荷、４・・・ＰＫＧ抵抗性負荷。
躬 １ 凶
！ ８２図FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a diagram of voltage changes over time, and FIG. 3 is a diagram of current changes over time. l... constant current diode, 2... switch, 3...
・PKG malleable load, 4...PKG resistive load. 1. Evil! Figure 82
Claims (1)
を挿入したことを特徴とする突入電流防止回路。1. An inrush current prevention circuit characterized by inserting a constant current diode into the input power line inside the package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60264889A JPS62126829A (en) | 1985-11-27 | 1985-11-27 | Rush-current preventing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60264889A JPS62126829A (en) | 1985-11-27 | 1985-11-27 | Rush-current preventing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62126829A true JPS62126829A (en) | 1987-06-09 |
Family
ID=17409631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60264889A Pending JPS62126829A (en) | 1985-11-27 | 1985-11-27 | Rush-current preventing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62126829A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0197163A (en) * | 1987-10-07 | 1989-04-14 | Nec Corp | Switching power supply circuit |
| JPH01177829A (en) * | 1987-12-29 | 1989-07-14 | Fujitsu Ltd | Printed board power source circuit |
| JPH03139090A (en) * | 1989-10-24 | 1991-06-13 | Fujitsu Ltd | Overvoltage protecting circuit of subscriber's circuit |
| JP2020505901A (en) * | 2017-01-11 | 2020-02-20 | カリィ テクノロジＣａｌｙ Ｔｅｃｈｎｏｌｏｇｉｅｓ | Devices for protection of electrical equipment |
-
1985
- 1985-11-27 JP JP60264889A patent/JPS62126829A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0197163A (en) * | 1987-10-07 | 1989-04-14 | Nec Corp | Switching power supply circuit |
| JPH01177829A (en) * | 1987-12-29 | 1989-07-14 | Fujitsu Ltd | Printed board power source circuit |
| JPH03139090A (en) * | 1989-10-24 | 1991-06-13 | Fujitsu Ltd | Overvoltage protecting circuit of subscriber's circuit |
| JP2020505901A (en) * | 2017-01-11 | 2020-02-20 | カリィ テクノロジＣａｌｙ Ｔｅｃｈｎｏｌｏｇｉｅｓ | Devices for protection of electrical equipment |
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